One-step aldol condensation of ethyl acetate with formaldehyde over Ce and P modified cesium supported alumina catalyst

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• 作者：Chidchon Sararuk^a ; ^b ; Dan Yang^a ; Guoliang Zhang^a ; Chunshan Li^a ; ^{csli@home.ipe.ac.cn} ; Suojiang Zhang^a ; ^{sjzhang@home.ipe.ac.cn}
• 关键词：Aldol condensation ; Cesium-supported alumina ; Cerium ; Phosphorus ; Ethyl acetate ; Formaldehyde ; Ethyl acrylate ; Acetic acid ; Acid-base bifunctional catalysts ; Acidity ; Basicity ; Pyridine FT-IR ; Lewis acid site ; Carbon formation ; XRD ; NH3-TPD ; CO2-TPD ; BET ; XPS ; Cerium oxide
• 刊名：Journal of Industrial and Engineering Chemistry
• 出版年：2017
• 出版时间：25 February 2017
• 年：2017
• 卷：46
• 期：Complete
• 页码：342-349
• 全文大小：2294 K
• 卷排序：46

文摘

Ethyl acrylate (EA) is synthesized by ethyl acetate (EtOAc) with formaldehyde (FA) through aldol condensation with fixed-bed reactor, and a series of Ce–P–Cs/γ-Al2O3 catalyst was developed. The catalysts were characterized with XRD, XPS, SEM-EDS, NH3- and CO2-TPD, BET, and pyridine FTIR. The influence of acidity and basicity on activity was discussed. Catalytic performances were further improved by the addition of small amounts of Ce. Key reaction parameters, such as amount of metal loading, space velocity and reaction temperature, were also optimized. The optimum condition demonstrated a maximum EA yield of 31.38% and 60.03% selectivity toward EA.